/Engine/Plugins/Media/ElectraUtil/Source/ElectraHTTPStream/Public/ElectraHTTPStream.h
Adds a method of your application to be called periodically from the worker thread of this handler. You may use this to drive another wrapping handler of yours that controls requests. For direct use of requests generated by this handler it is not necessary to add such a method. The NotificationDelegate() of the IElectraHTTPStreamRequestPtr request object should be all you need.
typedef TBaseDelegate_NoParams< void > FElectraHTTPStreamThreadHandlerDelegate